Ulhāsnagar,Ulhasnagarcity, northwestern Mahārāshtra Maharashtra state, western India. It lies northeast of Mumbai (Bombay). Part of the Thāna Thana industrial area, it specializes in the manufacture of chemicals and silk and nylon textiles. The town Ulhasnagar became important in 1947 as a refugee camp for displaced persons from Sindh, Pakistan. It The city has three colleges and an industrial-training institute. Pop. (1991 prelim.2001) 368473,822731.